- A `create` or `update` API request with duplicate items in a keyed list no longer wipes out managedFields. Examples include env var entries with the same name, or port entries with the same containerPort in a pod spec.
  - A server-side apply request that makes unrelated changes to an object which has duplicate items in a keyed list no longer fails, and leaves the existing duplicate items as-is.

* Implement alpha version of PreferAvoidPods ([#20699](https://github.com/kubernetes/kubernetes/pull/20699), [@jiangyaoguo](https://github.com/jiangyaoguo))
* Retry when apiserver fails to listen on insecure port ([#28797](https://github.com/kubernetes/kubernetes/pull/28797), [@aaronlevy](https://github.com/aaronlevy))

  * Docker versions as old as may 1.9.1 work with [known issues](CHANGELOG.md#191) but this is not guaranteed
* rkt version 1.21.0
  * known issues with the rkt runtime are [listed here](http://kubernetes.io/docs/getting-started-guides/rkt/notes/)
* etcd version 2.2.1

          // Single node on list
          if (next == null) {
            newTable.set(headIndex, head);
          } else {
            // Reuse the consecutive sequence of nodes with the same target
            // index from the end of the list. tail points to the first
            // entry in the reusable list.
            ReferenceEntry<K, V> tail = head;

emulatedDuration)\n}\n\n/**\n * Return the previous/next element of a list.\n *\n * @param {array} list    The list of elements\n * @param activeElement   The active element\n * @param shouldGetNext   Choose to get next or previous element\n * @param isCycleAllowed\n * @return {Element|elem} The proper element\n */\nconst getNextActiveElement = (list, activeElement, shouldGetNext, isCycleAllowed) => {\n  const listLength = list.length\n  let index = list.indexOf(activeElement)\n\n  // if the element does not exist...

- Missing directories listed in a user's PATH are no longer considered errors and are instead logged by the `kubectl plugin list` command when listing available plugins. ([#73542](https://github.com/kubernetes/kubernetes/pull/73542), [@juanvallejo](https://github.com/juanvallejo))

* The Kubernetes API server now supports the ability to break large LIST calls into multiple smaller chunks.  A client can specify a limit to the number of results to return, and if more results exist a token will be returned that allows the client to continue the previous list call repeatedly until all results are retrieved.  The resulting list is identical to a list call that does not perform chunking thanks to capabilities provided by etcd3.  This allows the server...

          // Single node on list
          if (next == null) {
            newTable.set(headIndex, head);
          } else {
            // Reuse the consecutive sequence of nodes with the same target
            // index from the end of the list. tail points to the first
            // entry in the reusable list.
            ReferenceEntry<K, V> tail = head;

pkg container/list, method (*List) Len() int
pkg container/list, method (*List) MoveToBack(*Element)
pkg container/list, method (*List) MoveToFront(*Element)
pkg container/list, method (*List) PushBack(interface{}) *Element
pkg container/list, method (*List) PushBackList(*List)
pkg container/list, method (*List) PushFront(interface{}) *Element
pkg container/list, method (*List) PushFrontList(*List)

</pre>

<p>
Within a parenthesized <code>const</code> declaration list the
expression list may be omitted from any but the first ConstSpec.
Such an empty list is equivalent to the textual substitution of the
first preceding non-empty expression list and its type if any.
Omitting the list of expressions is therefore equivalent to
repeating the previous list.  The number of identifiers must be equal